Chemical Element Comparison Guide
Compare element families, states, conductivity, reactivity, and common uses.
This guide complements the interactive periodic table. Element properties vary with temperature, pressure, purity, and allotrope.
| Family | Typical properties | Examples | Common uses |
|---|---|---|---|
| Alkali metals | Soft, reactive, one valence electron | Lithium, sodium, potassium | Batteries, salts, heat transfer |
| Alkaline earth metals | Reactive, harder than alkali metals | Magnesium, calcium, barium | Alloys, cement, medicine |
| Transition metals | Good conductors; variable oxidation states | Iron, copper, nickel, gold | Structures, wiring, catalysts, coins |
| Halogens | Reactive nonmetals that form salts | Fluorine, chlorine, bromine, iodine | Disinfection, polymers, lighting |
| Noble gases | Very low chemical reactivity | Helium, neon, argon, xenon | Lighting, shielding gas, cooling |
| Lanthanides | Similar silvery metals; magnetic and optical uses | Cerium, neodymium, europium | Magnets, screens, catalysts |
| Actinides | Radioactive heavy elements | Thorium, uranium, plutonium | Energy, research, instruments |